Lucas Sequence
Defined with \(L_0=2\), \(L_1=1\), and \(L_n=L_{n-1}+L_{n-2}\) when \(n\geq2\). Related to the Fibonacci sequence.
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 1838: | \[L_{1838}\] | 3 × 11027 × 808721 × 1259459467081<13> × 520591273139521<15> × 54091678578481865969<20> × 103571694007551438936153052729387474007385449<45> × [13392227320901443390918311444217323545857743736550728761337893785685059475881311781032976173198246007300536063859296176352536549394113516530902475867845039485700122720492981416695936842879543451559642769379373500988028916620416668756637979959175956311118252482296331504394892912074963<284>] |